I suggest ------(to him为什么不是him)that another building ----（build 适当形式加原因）

题目

I suggest ------(to him为什么不是him)that another building ----（build 适当形式加原因）

答案

I suggest to him that another building （should）be built.
suggest to sb.向某人建议,从句中使用虚拟语气should do sth.
should 可以省略